I'm struggling to install GDB in Porteus. Following steps in the article "Understanding Module Creation and Manipulation: Two Case Studies" I have downloaded the GDB package with all dependencies, and converted them to Porteus modules, but I'm not able to run it:

does not sound like slackware package (slack has i486 arch as minimum) and is probably coming from other distro. please stick to packages from slackware-13.37 repo for porteus-1.x line if that's possible.
moreover:

this line tells me that you are using 64bit edition (it would be handy if each user could fill in his profile with porteus arch/version he is using) so please use 64bit packages or setup multilib environment as per FAQ answer 9.

Thank you, guys. I wasn't able to find the GDB package from PPM, that's why I had downloaded it from the Debian repository. Eventually I used Google to find the right Slackware package. I think that PPM should indicate somehow that Debian packages are "less compatible".